Enum ScrollBarMode 

pub enum ScrollBarMode {
    Overlay,
    Permanent,
    Thin,
}

How the scroll bar is presented relative to the viewport content.

Variants

Overlay

Scroll bar overlays the content (macOS-style): a thin passive indicator is painted while scrolling; the full interactive track expands on pointer proximity. Does not reduce the viewport width.

Permanent

Scroll bar is a permanent layout sibling of the viewport, reserving its full thickness and always remaining interactive — the classic Windows/Linux gutter style.

Thin

Floats over the content like Overlay but only ever shows the thin resting indicator, never the full track. A passive scroll-position display for minimal UIs; drag and track-click still work against the full slot bounds.

Not the keyboard. The bar’s arrow / Home / End / Page arms sit on a node built focusable(false), so no keyboard user reaches them under any of the three modes — see ScrollBarPolicy::AlwaysOff, which states the same limit from the other side, and docs/touch-and-pen.md §10.2, which carries it as an open finding.

Trait Implementations

impl Clone for ScrollBarMode

fn clone(&self) -> ScrollBarMode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ScrollBarMode

impl Debug for ScrollBarMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for ScrollBarMode

fn default() -> ScrollBarMode

Returns the “default value” for a type.

impl Eq for ScrollBarMode

impl PartialEq for ScrollBarMode

fn eq(&self, other: &ScrollBarMode) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ScrollBarMode